If you're a big fan of Gary Barlow and co then you won't want to miss tonight's charity gig. His old Take That mate Robbie Williams and fellow X Factor judge Nicole Scherzinger are on hand for a few tunes, as are Kings of Leon and veteran showman Barry Manilow, Ellie Goulding, Dizzee Rascal, Tom Odell, Rizzle Kicks, Bastille, the Lumineers, Passenger, the Wanted and Little Mix. Chris Evans and Fearne Cotton bring us all the action from the Apollo in Hammersmith, London.